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  1. Replies
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    I refer to the TFT, there are some that have a...

    I refer to the TFT, there are some that have a chip dedicated to pixel management, it is generally incorporated into the PCB in addition to the screen's controller chip itself. The advantage is that...
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    In arduino, a TFT needs to have a graphics chip...

    In arduino, a TFT needs to have a graphics chip that is in charge of managing each pixel.

    The EVE 4 chips, specifically the BT817, could be a close option, the 10.1 "version has a 1280x800...
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    It is possible that with the most recent version...

    It is possible that with the most recent version of SdFat beta you can use the 256 Gb memory.

    I have a 128 Gb microSD installed in the GPS and it works very well

    24806

    24807

    24808
  4. The Neo7 that has worked very well is similar to...

    The Neo7 that has worked very well is similar to the Neo8 you have:
    GPS NEO-7M

    A version of the Neo6 that also works is this:
    Neo6 (GT-U7)

    Since the SMA connector is fragile, these spare...
  5. It works perfectly, much better than with the...

    It works perfectly, much better than with the built-in antenna. The external antenna is complementary, nothing has to be removed.

    PD: by the way, the Neo7s are much better, a pair of Neo8s have...
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    Paul some questions on the code: 1) What...

    Paul some questions on the code:

    1) What frequencies could cover the range 0-20 that you propose in the vector?

    for (int i=0; i < 20; i++)

    2) If it were zoomed in between 2-135 bins, would...
  7. When we work on TFT's that do not have a...

    When we work on TFT's that do not have a dedicated graphics processor, we must "mask actions so that they appear immediate" on the screen. We can achieve this by duplicating screens, whose difference...
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    If you are going to program your teensy 4.1 with...

    If you are going to program your teensy 4.1 with the external power supply still connected, you will damage your precious teensy.

    A phrase that has been said in the forum is more than eloquent:...
  9. Some alternatives are somewhat more expensive and...

    Some alternatives are somewhat more expensive and at first they were very limited with what could be obtained from them, without forgetting the learning curve, however, after some time I think I have...
  10. It is not that complicated, the first thing is to...

    It is not that complicated, the first thing is to get the touch panel to work using SPI. Then comes the calibration. The rotation of the screen must be considered and obtain the corresponding...
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    There is the detail: you come from the AVR-5V...

    There is the detail: you come from the AVR-5V environment. The teensy 4.1 you must use it with another approach, you must use an intermediate chip if you want to continue using the components you...
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    Windows 10 x64 V 20H2 Arduino IDE 1.8.13 ...

    Windows 10 x64 V 20H2
    Arduino IDE 1.8.13

    GD23ZUTX runs without issues at this moment. SdFat with the SDIO reader of the teensy 4.1 runs very fine, like a well greased motor.

    ...
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    I take advantage of the query, since I consider...

    I take advantage of the query, since I consider that it goes in the same direction: external source for teensy 4.x.

    How bad is it to connect an external source directly to the microUSB connector,...
  14. Like I said: Saint Google doesn't know...

    Like I said: Saint Google doesn't know everything. Thanks for sharing your knowledge.

    I have been rechecking all the GPS code that I am building for work, I used a teensy 3.6 with the idea that...
  15. To take advantage of the topic started by...

    To take advantage of the topic started by manes6969, I took what I learned.

    I moved towards improving the code for the GPS with what was exposed here. Previously I used only float, because the use...
  16. In teensy 3.6 it doesn't work, but in teensy 4 it...

    In teensy 3.6 it doesn't work, but in teensy 4 it does:

    https://www.mediafire.com/convkey/2ff7/k9j6nw2fsr4kdg7zg.jpg


    double XLat, YLong; //sensor
    XLat= 1.00000001; YLong= 1.000000005;...
  17. Ups, sorry Paul!, THX test again!

    Ups, sorry Paul!, THX test again!
  18. It's fine when you define the double variable, as...

    It's fine when you define the double variable, as in:

    double Lat = 1.00000001L
    But when that value comes from another source, such as some data thrown by a sensor or by some previous...
  19. Could you share how your sketch finally turned...

    Could you share how your sketch finally turned out?
  20. THX KurtE. These screens are very fussy about...

    THX KurtE.

    These screens are very fussy about the use of the Reset pin; to avoid headaches I suggest connecting to a separate RESET and DC pin on the second screen.

    So far none of the...
  21. In the header you could use something like this...

    In the header you could use something like this to define the two screens:


    #define TFT_RST 8
    #define TFT_DC 9
    #define TFT_CS 10

    #define TFT_RST2 21
    #define TFT_DC2 20
    #define...
  22. It seems to me that you can connect the two...

    It seems to me that you can connect the two displays in SPI1, you just have to use different CS and generate two control instances in the header, for example tft_1 and tft_2
    ...
  23. THX Excuse my novice question, but how do you...

    THX

    Excuse my novice question, but how do you install the hardware, that is, do you have a basic arrangement to test the operation of the library you have designed?
  24. I have looked inside the skecth on which the...

    I have looked inside the skecth on which the reading sequence of the video file in RAW format is plotted. The key is this function:


    drawImage (0, i * nl + j + (statMode> 0? 0: 4), lcd.width (),...
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    THX Paul. I put these lines at the beginning...

    THX Paul.

    I put these lines at the beginning of the SD.h file:


    // Use FILE_READ & FILE_WRITE as defined by FS.h
    //#ifdef FILE_READ
    #if defined(FILE_READ) && !defined(FS_H)
    #undef FILE_READ...
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    Thanks for your constant work on improving the...

    Thanks for your constant work on improving the working environment for teensy boards. Great effort.

    I am getting familiar with the ILI9488_t3 library and the settings to SdFat. Today I was...
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    Interesting project that you have considered....

    Interesting project that you have considered. From experience, the learning curve that you are about to start will inevitably lead you to explore other types of screens.

    Although it is a common...
  28. You must install the teensyduino 154-beta 3 or...

    You must install the teensyduino 154-beta 3 or the 154-beta 3
  29. Upload a link to see which screens you purchased.

    Upload a link to see which screens you purchased.
  30. Offtopic: To upload bmp images to your HX8357,...

    Offtopic:
    To upload bmp images to your HX8357, use the attached sketch. Allows uploading the image from the SDIO reader of the teensy 4.1, also use the SdFat Beta library instead of the SD library....
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    Well, well!. We have again some issues with the...

    Well, well!. We have again some issues with the SPI lines of the teensy 4.

    First I think we should know how to start SPI2 on the teensy 4. However, on this board, SPI2 is addressed to the SDIO...
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    Certainly, the spacing between the pads meant...

    Certainly, the spacing between the pads meant that I will not weld all the wires together, I took my time to relax my pulse. I used the wires from an old IDE cable that was stored in the drawer and...
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    I adjusted the dial example to match the physical...

    I adjusted the dial example to match the physical dimensions of the NHD-43 TFT.


    #include <GD23ZUTX.h>

    //Aguja indicadora
    int Centro=272/2; //AE8.png, 400x400 px, Centro=400/2
    float...
  34. Replies
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    Upload some photos to browse the project you have...

    Upload some photos to browse the project you have in hand. You can build an SDIO reader for your teensy 4 with an SD-microSD adapter:

    http://www.mediafire.com/convkey/b96d/z8gmu7wtvswuciizg.jpg
    ...
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    Hey, it's great that you already have your...

    Hey, it's great that you already have your screen. Exactly what model do you have? Any link to know your screen?

    For teensy 3.5 / 3.6 or 4 / 4.1 there is only one setting in the GD23ZUTX.h file...
  36. Replies
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    Don't go the way that comes with most FT81x...

    Don't go the way that comes with most FT81x displays, it is very complex. The editor you mention is designed for another type of programming environment, nothing to do with the arduino IDE. The...
  37. Replies
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    Zogster we will see your progress, I suggest the...

    Zogster we will see your progress, I suggest the capacitive screens with FT813 chip, the library supports both resistive and capacitive, I think that the capacitive ones support the continuous use of...
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    The FT81x is a GPU, it has basic instructions, it...

    The FT81x is a GPU, it has basic instructions, it can handle image files in the form of cells, assets, or direct (avi with audio, jpg or png). For example you can load two images (dial and needle);...
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    Excellent displays. The capacitive versions...

    Excellent displays. The capacitive versions (FT813) are more resistant: 3.5 ", 4.3" or 5 ". With options to be able to use them in sunlight conditions. I have recently been working on a modification...
  40. Go if that microSD is small !. If I'm not...

    Go if that microSD is small !. If I'm not mistaken, those microSD tend to fail, if not formatted correctly. The best thing is to format them directly in windows.
    ...
  41. Try using the following sketch: #include...

    Try using the following sketch:


    #include "SdFat.h"

    SdFat SD;

    void setup() {
    Serial.begin(9600);
    while (!Serial){;}
  42. This is the setup to obtain the previous images ...

    This is the setup to obtain the previous images


    void setup() {
    tft.begin();
    //ts.begin(); // touchscreen begin
    tft.fillScreen(ILI9341_BLACK); tft.setRotation(3);

    if...
  43. Extra configuration must be provided in the...

    Extra configuration must be provided in the SD.begin () line. The Sdfat beta library has two options:

    SD.begin (SdioConfig (FIFO_SDIO));

    and

    SD.begin (SdioConfig (DMA_SDIO));

    Depending on...
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    By the way in the forum I found this post, it...

    By the way in the forum I found this post, it indicates the ports that were enabled to connect through a 8-bit interface to a screen similar to the one you have, of course smaller:
    ...
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    Until now we do not have any approximation of the...

    Until now we do not have any approximation of the UTFT library to teensy 4. For teensy 3.2 there is support, with some minor adjustment in UTFT.ccp, it is possible to extend the library to teensy 3.6...
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    What screen do you want to use with UTFT?. It is...

    What screen do you want to use with UTFT?. It is possible that there is an alternative library.
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    Use a rechargeable battery LIR2032

    Use a rechargeable battery LIR2032
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    Just keep in mind that the costs of EVE2 / 3...

    Just keep in mind that the costs of EVE2 / 3 screens are not economical. However the screen performance is excellent. Matrix Orbital screens have quite advanced touch controllers, however additional...
  49. Great info!. A lot of cloth to cut!. This is...

    Great info!. A lot of cloth to cut!.

    This is my approach to smoothing readings. The key is the data acquisition interval; I think that 1 second is more than acceptable to have real-time...
  50. You must use an intermediate variable that, by...

    You must use an intermediate variable that, by gradual increments or decrements, allows a smoother or more natural indicator needle to slide between two readings:


    if (Lect2> Lect1) {Velp = Velp...
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